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Articles 1 - 27 of 27
Full-Text Articles in Life Sciences
Population Characteristics Of Central Stonerollers In Iowa Streams, Scott M. Bisping, Jesse R. Fischer, Michael C. Quist, Andrew J. Schaefer
Population Characteristics Of Central Stonerollers In Iowa Streams, Scott M. Bisping, Jesse R. Fischer, Michael C. Quist, Andrew J. Schaefer
The Prairie Naturalist
The central stoneroller (Campostoma anomalum) is a herbivore that can have substantial effects on algal communities, nutrient dynamics, and energy flow in streams. Despite its importance in lotic ecosystems, little is known about its population dynamics in streams of the Great Plains. Our objective was to describe age structure, age-specific mortality, and growth rates of central stonerollers in three Iowa streams. We sampled fish from 41 reaches during June-August 2007. We sampled 466 central stonerollers, of which we aged 192. Fish varied in length from 32 to 130 mm and in age from age 0 to 4 years. …
Growth Of Atlantic Salmon (Salmo Salar) In Freshwater, Douglas Bradlee Sigourney
Growth Of Atlantic Salmon (Salmo Salar) In Freshwater, Douglas Bradlee Sigourney
Open Access Dissertations
Growth plays a key role in regulating ecological and population dynamics. Life history characteristics such as age at maturity, fecundity and age and size at migration are tightly linked to growth rate. In addition, size can often determine survival and individual breeding success. To fully understand the process of growth it is important to understand the mechanisms that drive growth rates. In Atlantic salmon, growth is critical in determining life history pathways. Models to estimate growth could be useful in the broader context of predicting population dynamics. In this dissertation I investigate the growth process in juvenile Atlantic salmon (Salmo …
The Growth, Yield, And Financial Performance Of Isolated Eastern White Pine (Pinus Strobus L.) Reserve Trees, Christopher E. Zellers
The Growth, Yield, And Financial Performance Of Isolated Eastern White Pine (Pinus Strobus L.) Reserve Trees, Christopher E. Zellers
Electronic Theses and Dissertations
The ability of eastern white pine (Pinus strobus L.) to persist as emergent trees makes this species well suited to silvicultural systems in which they are retained as isolated reserves after a regeneration harvest. While such systems are implemented throughout the Acadian spruce-fir region of Maine, little is known about the growth response and financial performance of eastern white pine following complete release from competition. In this study, 77 trees from 8 sites throughout the Acadian spruce-fir region were sampled tree and crown measurements, and increment cores were extracted at breast height, as well as from the top of …
Fungal Endophytes Enhance Growth And Production Of Natural Products In Echinacea Purpurea (Moench.), Richard James Gualandi Jr.
Fungal Endophytes Enhance Growth And Production Of Natural Products In Echinacea Purpurea (Moench.), Richard James Gualandi Jr.
Masters Theses
Echinacea purpurea is a native herbaceous perennial with substantial economic value for its medicinal and ornamental qualities. Arbuscular mycorrhizae are symbiotic fungi that form relationships with plant roots and are known to enhance growth in the host. Mycorrhizae and other fungal endophytes often affect stress resistance and secondary metabolism in the host, as well as the ecology of other endophytes in the plant. A newly emerging paradigm in sustainable biotechnique is the targeted use of fungal endophytes to enhance growth and secondary metabolism in crops. Many of the therapeutic compounds in E. purpurea could be affected by fungal colonization. In …
Channel Catfish Diets Include Substantial Vegetation In A Missouri River Reservoir, Jonah D. Dagel, Melissa R. Wuellner, David W. Willis
Channel Catfish Diets Include Substantial Vegetation In A Missouri River Reservoir, Jonah D. Dagel, Melissa R. Wuellner, David W. Willis
The Prairie Naturalist
Channel catfish (Ictalurus punctatus) are native to Lake Sharpe, a Missouri River mainstem reservoir, and are common in angler catches. Channel catfish growth has declined since the formation of the reservoir in 1963. Mean lengths at time of capture for channel catfish ages 9, 10, II, and 12 have decreased by 69, 55, 115, and 21S mm, respectively, since impoundment. The objective of this study was to document monthly food habits of channel catfish throughout the growing season (May-August) in Lake Sharpe to assess potential effects of diet on growth. Although channel catfish consumed both macro invertebrates and …
Potential Importance Of Competition, Predation, And Prey On Yellow Perch Growth From Two Dissimilar Population Types, Casey W. Schoenebeck, Michael L. Brown
Potential Importance Of Competition, Predation, And Prey On Yellow Perch Growth From Two Dissimilar Population Types, Casey W. Schoenebeck, Michael L. Brown
The Prairie Naturalist
Our objective was to describe the influence of population dynamics, inter- and intra-specific competition, predation, prey abundance, and prey size structure on yellow perch (Perca flavescens) growth for two perch population types (high-quality and low-quality) commonly found in South Dakota glacial lakes. We selected Lake Cochrane as a low quality yellow perch population and Lake Madison as a high quality perch population. Sunfish (Lepomis spp.) relative abundance was greater (P < 0.05) in Lake Cochrane than Lake Madison, suggesting interspecific competition may have a large influence on yellow perch growth. Indices of available sizes and densities of zooplankton were lower (P < 0.05) in Lake Cochrane than Lake Madison, suggesting that increased competition for large zooplankton may have reduced zooplankton size structure and density. Zooplankton may be a limiting resource in South Dakota glacial lakes when both yellow perch and sunfish are feeding primarily on zooplankton which may explain differences in perch growth rates between population types .
Comparative Ecology Of Narrowly Sympatric Horned Lizards Under Variable Climatic Conditions, Kevin V. Young
Comparative Ecology Of Narrowly Sympatric Horned Lizards Under Variable Climatic Conditions, Kevin V. Young
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
We studied the Flat-tailed Horned Lizard, Phrynosoma mcallii, and the Sonoran Horned Lizard, P. goodei, in an area of narrow sympatry near Yuma, Arizona, and found they overlapped broadly in use of available food resources, body size, and growth rates. We compared diet (Chapter 2), growth and reproduction (Chapter 3), and survivorship (Chapter 4) of P. mcallii and P. goodei during two years of drought followed by a year of higher-than-average rainfall. We predicted that P. mcallii would be more tolerant of drought conditions than its congener, since P. mcalliiis found only in an extremely arid region while …
Human Osteoblast Proliferation In Culture Following A Nanosecond Pulsed Electric Field (Nspef), Leonard Joseph Carinci Jr.
Human Osteoblast Proliferation In Culture Following A Nanosecond Pulsed Electric Field (Nspef), Leonard Joseph Carinci Jr.
Biological Sciences Theses & Dissertations
Osteoblasts are mononucleate bone forming cells responsible for the deposition of new bone. Application of mechanical stress on bone reveals its ability to produce and release electric potentials across the cell membrane called piezoelectricity. The electric potentials produced in response to mechanical stress may have a direct correlation on osseous cells and the signaling pathways that regulate proliferation. Nanosecond pulsed electric fields (nsPEFs) are high intensity, ultrashort pulses which have the ability to maintain the integrity of the cell membrane by avoiding traditional electroporation. We delivered 8 nsPEFs (0.5 Hz) of a 25 kV/cm or 35 kV/cm electric field strength …
A Survey Of The Management And Development Of Captive African Elephant (Loxodonta Africana) Calves: Birth To Three Months Of Age, Nicole L. Kowalski, Robert H.I. Dale, Christa L. H. Mazur
A Survey Of The Management And Development Of Captive African Elephant (Loxodonta Africana) Calves: Birth To Three Months Of Age, Nicole L. Kowalski, Robert H.I. Dale, Christa L. H. Mazur
Scholarship and Professional Work - LAS
We used four surveys to collect information about the birth, physical growth, and behavioral development of 12 African elephant calves born in captivity. The management of the birth process and neonatal care involved a variety of standard procedures. All of the calves were born at night, between 7PM and 7AM. The calves showed a systematic progression in behavioral and physical development, attaining developmental milestones at least a quickly as calves in situ. This study emphasized birth-related events, changes in the ways that calves used their trunks, first instances of behaviors, and interactions of the calves with other, usually adult, elephants. …
Age, Growth And Maturation Of Swordtip Squid (Photololigo Edulis) In The Southern East China Sea, Kae-Yih Wang, Kuo-Tien Lee, Cheng-Hsin Liao
Age, Growth And Maturation Of Swordtip Squid (Photololigo Edulis) In The Southern East China Sea, Kae-Yih Wang, Kuo-Tien Lee, Cheng-Hsin Liao
Journal of Marine Science and Technology
The reproductive biology, and age and growth of the swordtip squid (Photololigo edulis) in the East China Sea were examined based on the growth ring of statoliths from 1797 specimens during the period of November 2002 to November 2004. The maximum age observed was 261 days in female and 253 days in male, an evidence showing that swordtip squid has a longevity of about 9 months in both sexes. Growth in mantle length (ML) and body weight (BW) in both sexes was best described by the exponential model. There was significantly difference in somatic or statolith growth between the sexes. …
Growth From Birth To Adulthood And Abdominal Obesity In A Brazilian Birth Cohort, D. A. Gonzalez, Aydin Nazmi, C. G. Victoria
Growth From Birth To Adulthood And Abdominal Obesity In A Brazilian Birth Cohort, D. A. Gonzalez, Aydin Nazmi, C. G. Victoria
Aydin Nazmi
Background: Rapid weight gain in childhood may increase the risk of chronic adult diseases. Few studies have examined the effects of lifecourse weight gain on waist circumference (WC), hip circumference (HC), or waist-to-hip ratio (WHR). Objective: To evaluate the effects of birthweight and weight gain from birth to age 23 years on WC, HC, and WHR in young adults. Design: Population-based birth cohort study started in 1982. A sample of 856 individuals was examined in 2006. Conditional growth analyses were carried out with adjustment for confounders. WC and HC were also mutually adjusted. Results: Weight gains during all age ranges …
Growth From Birth To Adulthood And Abdominal Obesity In A Brazilian Birth Cohort, D. A. Gonzalez, Aydin Nazmi, C. G. Victoria
Growth From Birth To Adulthood And Abdominal Obesity In A Brazilian Birth Cohort, D. A. Gonzalez, Aydin Nazmi, C. G. Victoria
Food Science and Nutrition
Background: Rapid weight gain in childhood may increase the risk of chronic adult diseases. Few studies have examined the effects of lifecourse weight gain on waist circumference (WC), hip circumference (HC), or waist-to-hip ratio (WHR).
Objective: To evaluate the effects of birthweight and weight gain from birth to age 23 years on WC, HC, and WHR in young adults.
Design: Population-based birth cohort study started in 1982. A sample of 856 individuals was examined in 2006. Conditional growth analyses were carried out with adjustment for confounders. WC and HC were also mutually adjusted.
Results: Weight gains during all age ranges …
Environmental And Endogenous Factors Influencing Emigration In Juvenile Anadromous Alewives, Benjamin I. Gahagan, Eric T. Schultz, Katie E. Gherard
Environmental And Endogenous Factors Influencing Emigration In Juvenile Anadromous Alewives, Benjamin I. Gahagan, Eric T. Schultz, Katie E. Gherard
EEB Articles
We analyzed juvenile anadromous alewife migration at Bride Lake, a coastal lake in Connecticut, during summer 2006 and found that migration on 24-hour and seasonal timescales was influenced by conditions of the environment and characteristics of the individual. To identify environmental cues of juvenile migration, we continuously video recorded fish at the lake outflow and employed information-theoretic model selection to identify the best predictors of daily migration rate. More than 80% of the approximately 320,000 juveniles that migrated from mid-June to mid-August departed in three pulses lasting one or two days. Pulses of migration were associated with precipitation events, transient …
Age And Growth Of The Mesopotamian Spiny Eel, Mastacembelus Mastacembelus(Banks & Solender, 1794), From Southeastern Anatolia, Aysun Gümüş, Erdi̇nç Şahi̇nöz, Zafer Doğu, Nazmi̇ Polat
Age And Growth Of The Mesopotamian Spiny Eel, Mastacembelus Mastacembelus(Banks & Solender, 1794), From Southeastern Anatolia, Aysun Gümüş, Erdi̇nç Şahi̇nöz, Zafer Doğu, Nazmi̇ Polat
Turkish Journal of Zoology
Mesopotamian spiny eels, Mastacembelus mastacembelus (Banks & Solender, 1794), were collected from a large dam lake located on the Euphrates River in order to determine the most reliable ageing method among different hard structures and to estimate growth parameters. Vertebra, otolith, and opercle series were removed from 195 individuals. Vertebrae displayed the most interpretable annulus formations. Total length ranged from 14.4 cm to 76.9 cm and total weight ranged from 6.0 g to 950.0 g. The length and weight frequency distribution was significantly different between the 2 sexes (K-S test, P < 0.001). The length-weight relationship, determined as W = 0.004TL^{2.84} (r = 0.98), revealed no sex-based significant difference (GLM, P > 0.05). Age classes ranged from 1 to 21 years …
Growth And Age At Reproductive Maturity Of The Carolina Pigmy Rattlesnake, Sistrurus M. Miliarius (Reptilia: Serpentes), Kevin Robert Messenger
Growth And Age At Reproductive Maturity Of The Carolina Pigmy Rattlesnake, Sistrurus M. Miliarius (Reptilia: Serpentes), Kevin Robert Messenger
Theses, Dissertations and Capstones
Growth and age at reproductive maturity are life history attributes that play an important role in the development of proper management strategies. The Carolina Pigmy Rattlesnake, Sistrurus m. miliarius, is one of two dwarf rattlesnake species. The subspecies ranges from eastern NC to nearly the southern tip of SC and into the northeastern portion of GA. In NC, where the species’ status is of Special Concern, fragmentation and land development have destroyed most of its historic range. Its small size also makes it highly susceptible to predation. In some parts of the range, commercial collection is another pressure the species …
Propagation And Growth Of Chokecherry (Prunus Virginaiana) As An Alternative, Water-Wise, Fruit Crop For The Intermountain West, Jeremy R. Crook
Propagation And Growth Of Chokecherry (Prunus Virginaiana) As An Alternative, Water-Wise, Fruit Crop For The Intermountain West, Jeremy R. Crook
Browse All Undergraduate research
Utah fruit growers have shown interest in chokecherry (Prunus virginiana) as an alternative crop that has low requirements for water and soil fertility. Consumers want native fruits like chokecherry that are healthy and taste good. Currently, the limiting factor in developing a chokecherry industry in Utah is the ability to propagate large numbers of plants for orchard establishment. Chokecherries are difficult to propagate by traditional means because of their low rooting percentages. Plant numbers can be increased in tissue culture but methods are lacking for efficiently inducing roots and acclimating tissue culture plantlets. We are also working on other propagation …
Novel Technique Shows Different Hydrophobic Chemical Signatures Of Exotic And Indigenous Plant Soils With Similar Effects Of Extracts On Indigenous Species Seedling Growth, Emilie-Jane Ens, Kristine O. French, John B. Bremner, Jurgen Korth
Novel Technique Shows Different Hydrophobic Chemical Signatures Of Exotic And Indigenous Plant Soils With Similar Effects Of Extracts On Indigenous Species Seedling Growth, Emilie-Jane Ens, Kristine O. French, John B. Bremner, Jurgen Korth
Faculty of Science - Papers (Archive)
Changes to ecosystem abiotic parameters are regarded as possible mechanisms facilitating plant invasion and community composition shifts. This study compared the hydrophobic chemical signatures of soil from exotic bitou bush (Chrysanthemoides monilifera spp. rotundata) invaded, indigenous acacia (Acacia longifolia var. sophorae) dominated and bare sand (unvegetated) habitats using a novel, rapid, capturing technique which utilised AmberliteA (R) XAD4 resin filled bags that were placed in situ. The hydrophobic chemical signature of the bitou bush soil extract was significantly different to the acacia soil and bare sand extracts. High concentrations of 18 sesquiterpenes dominated the hydrophobic signature of the bitou bush …
Effect Of Glycinebetaine On Proline, Water Use, And Photosynthetic Efficiencies, And Growth Of Rice Seedlings Under Salt Stress, Suriyan Chaum, Chalermpol Kirdmanee
Effect Of Glycinebetaine On Proline, Water Use, And Photosynthetic Efficiencies, And Growth Of Rice Seedlings Under Salt Stress, Suriyan Chaum, Chalermpol Kirdmanee
Turkish Journal of Agriculture and Forestry
The aim of this investigation was to improve salt tolerance abilities prior to rice crop harvesting, including proline accumulation, pigment stabilization, water use efficiency (WUE), photosynthetic efficiency, and growth, by using exogenous foliar-sprayed glycinebetaine (Glybet). Pathumthani 1 (PT1) is reported to be a salt-sensitive cultivar and it was selected as a model plant. The proline content of PT1 rice was enriched by 50 mM of foliar-sprayed Glybet, thereby maintaining WUE and pigment stabilization, leading to high photosynthetic performance in chlorophyll a fluorescence and CO_2 assimilation, and increasing plant height when the plant was exposed to 150 mM of NaCl salt …
Effect Of Pen Mates On Growth, Backfat Depth, And Longissimus Muscle Area Of Swine, W. L. Hsu, Rodger K. Johnson, L. Dale Van Vleck
Effect Of Pen Mates On Growth, Backfat Depth, And Longissimus Muscle Area Of Swine, W. L. Hsu, Rodger K. Johnson, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
Records on final BW (kg), backfat depth (cm), and LM area (cm2) of pigs from a University of Nebraska Large White/Landrace composite population were analyzed to estimate the effects of pen mates. Measurements were at approximately 180 d of age for 3,524 pigs in 351 pens (9 to 11 pigs per pen) farrowed from 1999 to 2005. The area of each pen was 8.13 m2. The full model (M1) included the fixed effects of contemporary group, sex, line, and the covariates of age and inbreeding coefficient, and included random direct genetic, genetic pen-mate, permanent environmental, pen, …
On The Growth Of The Scaldfish Arnoglossus Laterna (Walbaum, 1792) From İzmir Bay, Central Aegean Sea, Di̇lek Uçkun İlhan, Sencer Akalin, Okan Özaydin, Zafer Tosunoğlu, Semi̇h Leblebi̇ci̇
On The Growth Of The Scaldfish Arnoglossus Laterna (Walbaum, 1792) From İzmir Bay, Central Aegean Sea, Di̇lek Uçkun İlhan, Sencer Akalin, Okan Özaydin, Zafer Tosunoğlu, Semi̇h Leblebi̇ci̇
Turkish Journal of Zoology
Scaldfish (Arnoglossus laterna) (n = 1892) were caught in İzmir Bay (Aegean Sea) from January 2005 to December 2006. Total length and weight of all specimens ranged from 3.9 to 16.0 cm and from 0.47 to 41.63 g, respectively. The overall ratio of females to males was 1:1.91. The length-weight relationships for females, males, and all specimens combined were estimated, respectively, as W = 0.0096 × L^{2.921}, W = 0.0111 × L^{2.857}, and W = 0.0096 × L^{2.917}; and the parameters of the von Bertalanffy growth equations were, respectively, L_{\infinity}= 17.58, 15.36, and 17.19 cm; k = 0.412, 0.461, and …
Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki
Life History Features Of The Nonindigenous Three-Spined Stickleback (Gasterosteus Aculeatus Linnaeus, 1758) In The Gomishan Wetland (Southeast Caspian Sea, Iran), Rahman Patimar, Mariam Horry Najafabadi, Manizheh Ghadi Souraki
Turkish Journal of Zoology
The Caspian Sea forms the southern limit of the distribution range of the three-spined stickleback (Gasterosteus aculeatus), but little is known about its life history in this area. A total of 362 specimens were collected from the Gomishan wetland (southeast Caspian Sea, Iran) to describe the stickleback's life history characteristics. Samples were taken monthly between February and July of 2008. The maximum ages of the population observed were 2+ years for males and 3+ years for females. The length-weight relationship (LWR) was estimated as W = 0.0042TL^{3.711} for immature specimens, W = 0.0095TL^{3.1328} for males, and W = 0.0057TL^{3.4678} for …
Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Growth And Reproduction Of Large-Scaled Gurnard (Lepidotrigla Cavillone Lacepède, 1801) (Triglidae) In The Central Aegean Sea, Eastern Mediterranean, Akin Türker İlkyaz, Gülnur Meti̇n, Ozan Soykan, Hasan Tuncay Kinacigi̇l
Turkish Journal of Zoology
Age, growth, and reproduction of the large-scaled gurnard were studied in the central Aegean Sea to provide fisheries managers with the essential data for science-based management. A total of 2342 samples were collected by trawl hauls between July 2004 and June 2007 from İzmir Bay (Turkey). The size of the samples ranged from 3.4 to 15.2 cm total length and the samples were composed of 35.2% females, 25.7% males and 39.1% immature individuals, with a female to male ratio of 1:0.73. The length-weight relationship was calculated as W = 0.0086L^{3.16} for all samples. The age composition of the samples was …
Age, Growth, Length-Weight Relationship And Reproduction Of The Striped Seabream (Lithognathus Mormyrus L., 1758) (Sparidae) In The Beymelek Lagoon (Antalya, Turkey), Yilmaz Emre, İsmet Balik, Çeti̇n Sümer, D. Aytuğ Oskay, H. Özgür Yeşi̇lçi̇men
Age, Growth, Length-Weight Relationship And Reproduction Of The Striped Seabream (Lithognathus Mormyrus L., 1758) (Sparidae) In The Beymelek Lagoon (Antalya, Turkey), Yilmaz Emre, İsmet Balik, Çeti̇n Sümer, D. Aytuğ Oskay, H. Özgür Yeşi̇lçi̇men
Turkish Journal of Zoology
Age, growth, length-weight relationship and reproduction were investigated for striped seabream (Lithognathus mormyrus L., 1758) collected from Beymelek Lagoon (Antalya, Turkey) between February 2006 and January 2007. The ages of striped seabream ranged from 0 to 3 years for males and from 0 to 4 years for females. Their total lengths and weights ranged between 14.4 and 26.4 cm and 42 and 297 g for males and 14.3 and 27.4 cm and 40 and 329 g for females, respectively. The growth parameters of the von Bertalanffy equation were: L_{\infinity} = 28.3 cm, K = 0.456 year^{-1} and t_0 = -1.859 …
Growth And Length-Weight Relationships Of The Horse Mackerel, Trachurus Mediterraneus Ponticus (Aleev, 1956), Off The Bulgarian Black Sea Coast, Maria Hristova Yankova, Violin Stoyanov Raykov, Dimitar Borisov Gerdzhikov, Petya Bogomilova Frateva
Growth And Length-Weight Relationships Of The Horse Mackerel, Trachurus Mediterraneus Ponticus (Aleev, 1956), Off The Bulgarian Black Sea Coast, Maria Hristova Yankova, Violin Stoyanov Raykov, Dimitar Borisov Gerdzhikov, Petya Bogomilova Frateva
Turkish Journal of Zoology
Between April 2007 and October 2008 we collected 1995 horse mackerel specimens from the territorial waters of the Bulgarian Black Sea. Age, length, and weight of these specimens were determined to estimate length-weight relationships and age composition. The present study utilized otolith characterization to determine age. The sex ratio was 1:1.36686 (M:F). The prevalent age classes were 2+, 3+, and 4+. The exponent b of equation resulted in the value 3.3046, which indicates that the weight growth is positive allometric. Growth parameters of the von Bertalanffy equation were separately evaluated for females and males as follows: L_{\infinity} = 19.66, K …
The Effect Of 4-Chloroindole-3-Acetic Acid On Some Growth Parameters In Mung Bean Under Cadmium Stress, Mohammad Mazid, Barket Ali, Shamsul Hayat, Aqil Ahmad
The Effect Of 4-Chloroindole-3-Acetic Acid On Some Growth Parameters In Mung Bean Under Cadmium Stress, Mohammad Mazid, Barket Ali, Shamsul Hayat, Aqil Ahmad
Turkish Journal of Biology
Seedlings of mung bean (Vigna radiata L. Wilczek) cv. T-44 grown on a sand culture were exposed to cadmium (Cd) (100 µM) on day 10 of growth. These seedlings were subsequently sprayed with deionized water (control) or 4-chloroindole-3-acetic acid (4-Cl-IAA) (10^{-6} M) on day 15 and were sampled 30 days after sowing to assess growth and metabolite content. Growth (length, and fresh and dry mass of roots and shoots) and the level of metabolites (chlorophyll, nitrogen, phosphorus, total sugar, and soluble protein) in the leaves significantly decrease in response to Cd stress; however, the 4-Cl-IAA (10^{-6} M) treatment, both in …
The Hydraulic Geometry Of Narrow And Deep Channels; Evidence For Flow Optimisation And Controlled Peatland Growth, Rachel Nanson, Gerald C. Nanson, He Qing Huang
The Hydraulic Geometry Of Narrow And Deep Channels; Evidence For Flow Optimisation And Controlled Peatland Growth, Rachel Nanson, Gerald C. Nanson, He Qing Huang
Faculty of Science - Papers (Archive)
At-a-station and bankfull hydraulic geometry analyses of peatland channels at Barrington Tops, New South Wales, Australia, reveal adjustments in self-forming channels in the absence of sediment load. Using Rhodes ternary diagram, comparisons are made with hydraulic geometry data from self-forming channels carrying bedload in alluvial settings elsewhere. Despite constraints on channel depths caused at some locations by the restricted thickness of peat, most stations have cohesive, near-vertical, well-vegetated banks, and width/depth (w/d) ratios of similar to 2 that are optimal for sediment-free flow. Because banks are strong, resist erosion and can stand nearly vertical, and depth is sometimes constrained, adjustments …
In Situ Growth Of Sno2 On Graphene Nanosheets As Advanced Anode Materials For Rechargeable Lithium Batteries, Xiaowei Yang, Yu-Shi He, Xiao-Zhen Liao, Jun Chen, Gordon G. Wallace, Zi-Feng Ma
In Situ Growth Of Sno2 On Graphene Nanosheets As Advanced Anode Materials For Rechargeable Lithium Batteries, Xiaowei Yang, Yu-Shi He, Xiao-Zhen Liao, Jun Chen, Gordon G. Wallace, Zi-Feng Ma
Faculty of Science - Papers (Archive)
Graphene with a single layer of carbon atoms densely packed in a honeycomb crystal lattice is one of attractive materials for the intercalation of lithium ion, but it has low volumetric capacity owing to low tap density. We report a method for in situ growth of SnO2 on graphene nanosheets (SGN) as anode materials for rechargeable lithium batteries. The results indicated that the SnO2 nanoparticles with size in the range of 5-10 nm and a polycrystalline structure are homogeneously supported on graphene nanosheets. The charge and discharge capacities of SGN attained to 1559.7 and 779.7 mAh/g in the first cycle …